Distance moved by Accelerometer

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You get position by integrating the linear acceleration twice but the error is horrible. It is useless in practice.

Here is an explanation why (Google Tech Talk) at 23:20. I highly recommend this video.

However the gyro mouse might work for your application, see between 37:00-38:25 in the video.

Similar questions:

track small movements of iphone with no GPS
What is the real world accuracy of phone accelerometers when used for positioning?
how to calculate phone’s movement in the vertical direction from rest?
iOS: Movement Precision in 3D Space
How to use Accelerometer to measure distance for Android Application Development
How can I find distance traveled with a gyroscope and accelerometer?

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